Observed arrival · 2026-08-27
Amber, the array language for market data
Amber is a portable C99 columnar engine and q-inspired language for querying in-memory market data.
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Field notes
Amber organizes market data as columns rather than rows and exposes the same underlying buffers to its C API, NumPy views, and Arrow exports. Its language adopts q/kdb+ vocabulary, including qSQL, keyed tables, and native as-of joins, while amberd provides a small TCP query server with text, JSON, or raw replies. The homepage also documents four column attributes and a 16 MB thread-local arena for as-of processing, giving the project unusually concrete implementation detail.
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